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[personal profile] entirelysonja
This morning Erika was doing some schoolwork by herself so I could pack a picnic lunch. After about 10 minutes, she came to me and said, "Mama, I don't understand what I'm supposed to do in the math problem."

So I began to explain. "Imagine you're in a car. The car has a gas tank that holds 20 gallons of gas. After you've been driving for a while, you only have twelve gallons left. How many gallons of gas do you need to add to the tank to fill it back up?"

"But Mama, you wrote that the car's tank held 10 gallons!"

"I did? Oh. I'm so sorry, I meant 20 gallons. Please change it to 20 gallons. Now does it make sense?"


She then proceeded to correctly solve the problem, which involved filling out a chart showing how much gas you would need to put into the tank based on different values of how much was already there. I got this problem from MEP 2a, which I've been finding very useful for Erika's "Math Warmup." now if only I could copy the problems correctly!

Oops. At least she was in a good mood, so I think it was probably a positive experience involving asking for help before being totally frustrated, and hearing me apologize for a mistake. If it had happened in the afternoon when she was tired, it might have turned out differently...


Date: 2011-10-04 05:24 am (UTC)
From: (Anonymous)
A million thanks for posting this ifnormaiton.


Date: 2012-06-16 05:17 am (UTC)
From: (Anonymous)
I don't think it is a particularly meginnaful chart. Median not mean disposable income should be used. And the chart should reflect distance travelled as overall fuel economy in the passenger fleet is higher today. Perhaps the blog host can chart the data from Beth Ann Bovino at Standard & Poors who stated on March 11, 2008 that:In 1980, the average American had to work 105 minutes to buy enough gas to drive the average car 100 miles, according to , a senior economist at Standard and Poor's. Now, the average American needs to work only 53 minutes, thanks to better fuel efficiency and higher wages. I'm not certain that Bovino means mean or median when she refers to the average American. Of course, with the pump price increases since March, the number of minutes worked to drive 100 miles has increased.


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